/*
 *  jQuery table2excel - v1.1.1
 *  jQuery plugin to export an .xls file in browser from an HTML table
 *  https://github.com/rainabba/jquery-table2excel
 *
 *  Made by rainabba
 *  Under MIT License
 */
/*
 *  jQuery table2excel - v1.1.1
 *  jQuery plugin to export an .xls file in browser from an HTML table
 *  https://github.com/rainabba/jquery-table2excel
 *
 *  Made by rainabba
 *  Under MIT License
 */
//table2excel.js
;(function ( $, window, document, undefined ) {
    var pluginName = "table2excel",

    defaults = {
        exclude        : ".noExl",
        name           : "Table2Excel",
        filename       : "table2excel.xls",
        exclude_img    : true,
        exclude_links  : true,
        exclude_inputs : true
    };

    // 去除html标签
    function removeHTMLTag(str) {
        str = str.replace(/<\/?[^>]*>/g, ''); //去除HTML tag
        str = str.replace(/\ +/g,"");//去掉空格方法
        str = str.replace(/[ ]/g,"");//去掉空格
        str = str.replace(/[\r\n]/g,""); //去除多余空行
        str = str.replace(/ /ig, ''); //去掉
        return str;
    }

    // The actual plugin constructor
    function Plugin ( element, options ) {
            this.element = element;
            // jQuery has an extend method which merges the contents of two or
            // more objects, storing the result in the first object. The first object
            // is generally empty as we don't want to alter the default options for
            // future instances of the plugin
            //
            this.settings = $.extend( {}, defaults, options );
            this._defaults = defaults;
            this._name = pluginName;
            this.init();
    }

    Plugin.prototype = {
        init: function () {
            var e = this;
            var table_html = "<table";
            var border = $('table').attr("border");
            if (border) {
                table_html += " border=\'" + border + "\' ";
            }
            var style  = $('table').attr("style");
            if (style) {
                table_html += " style=\'" + style + "\' ";
            }
            table_html += ">";

            var utf8Heading = "<meta http-equiv=\"content-type\" content=\"application/vnd.ms-excel; charset=UTF-8\">";
            e.template = {
                head: "<html xmlns:o=\"urn:schemas-microsoft-com:office:office\" xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns=\"http://www.w3.org/TR/REC-html40\">" + utf8Heading + "<head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets>",
                sheet: {
                    head: "<x:ExcelWorksheet><x:Name>",
                    tail: "</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet>"
                },
                mid: "</x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body>",
                table: {
                    head: table_html,
                    tail: "</table>"
                },
                foot: "</body></html>"
            };

            e.tableRows = [];

            // get contents of table except for exclude
            $(e.element).each( function(i,o) {
                //console.log(o);
                var tempRows = "";
                if($(o).find("thead").length){
                    tempRows += "<thead>";
                    tempRows += e.tableTotdth(e,$(o).find("thead"));
                    tempRows += "</thead>";
                }
                if($(o).find("tbody").length){
                    tempRows += "<tbody>";
                    tempRows += e.tableTotdth(e,$(o).find("tbody"));
                    tempRows += "</tbody>";
                }
                // exclude img tags
                if(e.settings.exclude_img) {
                    tempRows = exclude_img(tempRows);
                }

                // exclude link tags
                if(e.settings.exclude_links) {
                    tempRows = exclude_links(tempRows);
                }

                // exclude input tags
                if(e.settings.exclude_inputs) {
                    tempRows = exclude_inputs(tempRows);
                }

                console.log(tempRows);

                e.tableRows.push(tempRows);
            });

            e.tableToExcel(e.tableRows, e.settings.name, e.settings.sheetName);
        },

        tableTotdth: function (e,o) {
            var tempRows = "";
            o.find("tr").not(e.settings.exclude).each(function (i,p) {

                tempRows += "<tr>";
                $(p).find("td,th").not(e.settings.exclude).each(function (i,q) { // p did not exist, I corrected

                    //获取td,th标签名
                    var tag = $(q).prop("nodeName").toLowerCase();
                    /*
                     文本
                     mso-number-format:@
                     数字
                     mso-number-format:“0.000”
                     日期
                     mso-number-format:“mm/dd/yy”
                     日期
                     mso-number-format:“d-mmm-yyyy”
                     百分比
                     mso-number-format:Percent
                     */
                    var rc_style = $(this).attr("style");
                    if(!rc_style){
                        rc_style = '';
                    }
                    var rc = {
                        rows: $(this).attr("rowspan"),
                        cols: $(this).attr("colspan"),
                        style: rc_style+"mso-number-format:'@';",
                        align: $(this).attr("align"),
                        flag: $(q).find(e.settings.exclude)
                    };

                    //判断纯数字
                    var _isNum = /^[0-9]+\.?[0-9]*$/;
                    if(removeHTMLTag($(q).html()) != '' && _isNum.test(removeHTMLTag($(q).html()))){
                        rc.style = rc_style;
                    }

                    if( rc.flag.length > 0 ) {
                        tempRows += "<"+tag+"> </"+tag+">"; // exclude it!!
                    } else {
                        tempRows += "<"+tag+"";
                        if( rc.rows) {
                            tempRows += " rowspan=\"" + rc.rows + "\" ";
                        }
                        if( rc.cols) {
                            tempRows += " colspan=\"" + rc.cols + "\" ";
                        }
                        if( rc.style) {
                            tempRows += " style=\"" + rc.style + "\" ";
                        }
                        if( rc.align) {
                            tempRows += " align=\"" + rc.align + "\" ";
                        }
                        tempRows += "/>" + $(q).html() + "</"+tag+">";
                    }
                });

                tempRows += "</tr>";
            });

            return tempRows;
        },

        tableToExcel: function (table, name, sheetName) {
            var e = this, fullTemplate="", i, link, a;

            e.format = function (s, c) {
                return s.replace(/{(\w+)}/g, function (m, p) {
                    return c[p];
                });
            };

            sheetName = typeof sheetName === "undefined" ? "Sheet" : sheetName;

            e.ctx = {
                worksheet: name || "Worksheet",
                table: table,
                sheetName: sheetName
            };

            fullTemplate= e.template.head;

            if ( $.isArray(table) ) {
                for (i in table) {
                      //fullTemplate += e.template.sheet.head + "{worksheet" + i + "}" + e.template.sheet.tail;
                      fullTemplate += e.template.sheet.head + sheetName + i + e.template.sheet.tail;
                }
            }

            fullTemplate += e.template.mid;

            if ( $.isArray(table) ) {
                for (i in table) {
                    fullTemplate += e.template.table.head + "{table" + i + "}" + e.template.table.tail;
                }
            }

            fullTemplate += e.template.foot;

            for (i in table) {
                e.ctx["table" + i] = table[i];
            }
            delete e.ctx.table;

            var isIE = /*@cc_on!@*/false || !!document.documentMode; // this works with IE10 and IE11 both :)            
            //if (typeof msie !== "undefined" && msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./))      // this works ONLY with IE 11!!!
            if (isIE) {
                if (typeof Blob !== "undefined") {
                    //use blobs if we can
                    fullTemplate = e.format(fullTemplate, e.ctx); // with this, works with IE
                    fullTemplate = [fullTemplate];
                    //convert to array
                    var blob1 = new Blob(fullTemplate, { type: "text/html" });
                    window.navigator.msSaveBlob(blob1, getFileName(e.settings) );
                } else {
                    //otherwise use the iframe and save
                    //requires a blank iframe on page called txtArea1
                    txtArea1.document.open("text/html", "replace");
                    txtArea1.document.write(e.format(fullTemplate, e.ctx));
                    txtArea1.document.close();
                    txtArea1.focus();
                    sa = txtArea1.document.execCommand("SaveAs", true, getFileName(e.settings) );
                }

            } else {
                var blob = new Blob([e.format(fullTemplate, e.ctx)], {type: "application/vnd.ms-excel"});
                window.URL = window.URL || window.webkitURL;
                link = window.URL.createObjectURL(blob);
                a = document.createElement("a");
                a.download = getFileName(e.settings);
                a.href = link;

                document.body.appendChild(a);

                a.click();

                document.body.removeChild(a);
            }

            return true;
        }
    };

    function getFileName(settings) {
        return ( settings.filename ? settings.filename : "table2excel" );
    }

    // Removes all img tags
    function exclude_img(string) {
        var _patt = /(\s+alt\s*=\s*"([^"]*)"|\s+alt\s*=\s*'([^']*)')/i;
        return string.replace(/<img[^>]*>/gi, function myFunction(x){
            var res = _patt.exec(x);
            if (res !== null && res.length >=2) {
                return res[2];
            } else {
                return "";
            }
        });
    }

    // Removes all link tags
    function exclude_links(string) {
        return string.replace(/<a[^>]*>|<\/a>/gi, "");
    }

    // Removes input params
    function exclude_inputs(string) {
        var _patt = /(\s+value\s*=\s*"([^"]*)"|\s+value\s*=\s*'([^']*)')/i;
        return string.replace(/<input[^>]*>|<\/input>/gi, function myFunction(x){
            var res = _patt.exec(x);
            if (res !== null && res.length >=2) {
                return res[2];
            } else {
                return "";
            }
        });
    }

    $.fn[ pluginName ] = function ( options ) {
        var e = this;
            e.each(function() {
                if ( !$.data( e, "plugin_" + pluginName ) ) {
                    $.data( e, "plugin_" + pluginName, new Plugin( this, options ) );
                }
            });

        // chain jQuery functions
        return e;
    };

})( jQuery, window, document );
